Update ANGLE's docs regarding Windows 10 SDK version to use

Bug: chromium:1292528
Change-Id: I5ccfcc477a96f1e84814106c47e2a359b312633d
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3573391
Reviewed-by: Stephen White <senorblanco@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>

doc/DevSetup.md

@@ -22,8 +22,9 @@ On Windows:
 
  * ***IMPORTANT: Set `DEPOT_TOOLS_WIN_TOOLCHAIN=0` in your environment if you are not a Googler.***
  * Install [Visual Studio Community 2022](https://visualstudio.microsoft.com/vs/)
- * Install the [Windows 10 SDK, latest version](https://developer.microsoft.com/en-us/windows/downloads/windows-10-sdk).
+ * Install the [Windows SDK](https://developer.microsoft.com/en-us/windows/downloads/sdk-archive/).
    * You can install it through Visual Studio Installer if available.
+   * The currently supported Windows SDK version can be found in [vs_toolchain.py](https://chromium.googlesource.com/chromium/src/build/+/refs/heads/main/vs_toolchain.py).
    * The SDK is required for GN-generated Visual Studio projects, the D3D Debug runtime, and the latest HLSL Compiler runtime.
  * (optional) See the [Chromium Windows build instructions](https://chromium.googlesource.com/chromium/src/+/main/docs/windows_build_instructions.md) for more info.